Extraction and Digital Translation of Urban Spatial Elements Based on a Series of Historical Maps

Figure 9

(a) Distribution of green space in 1888 (source: the map of Tianjin city with Zizhu forest in 1888). (b) Distribution of green space in 1913 (source: the recent detailed map of Tianjin in 1913). (c) Distribution of green space in 1930 (source: the map of Tianjin city streets in 1930). (d) Distribution of green space in 1939 (source: the latest Tianjin street map in 1939). (e) Distribution of green space in 1946 (source: the latest map of Tianjin downtown in 1946). (f) Distribution of green space in 1951 (source: the new dual-use map of Tianjin in 1951). (g) Distribution of green space in 1984 (source: traffic map of downtown Tianjin in 1984). (h) Distribution of green space in 2016 (source: remote sensing map in 2016).

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